Wrench.



L. S. WHITEHEAD.

WRENCH.

APPLICATION FILED SEPT. l, 1911.

Patented Jan. 23, 191.2.

l To all whom it may concern/:1 l

LEO s. winner-LEAD, or wnnnnme, w'nsfr'vrnernia.

WRENCH.

Specific-tion of Letters Patent. Paige-nite@ Jian., T22-3,

Application i'iiii september 1, '1911. serial NQ, semer.'

tion between the fixed and niovable ']aws,

and an exact, easy and rapid adjustment of able jaw,

nects said )aw and the latter jaw.4 More especially, the invention resides in theparticular construction. of the `lever for actuating the aforesaid movaiid of the member which con lever together. 7 A structural embodiment of the invention is illustrated in the accompanying draiving,

' whereofl,Figure l is'a face View, partly in section, ofv the improved wrench, showing the connecting member in normal position; Fig.. 2,

[is a similar view showing, said member disthe adjustment' of movable jaw" to zpermit the latter; Vand Fig. 3 is abovef mentionedengaged Afrom the a perspective vie-'W ofthe connecting member.

As' shown in said drawing, the Wrench.

Y consists preferably of the following main parts, viz., the fixed jaw-carrying member l 7, the movable jaw-.carrying"member 8, the. lever 9 for operating the second-nanied mehrvr 'l0 between same tliinnes's as the jaw.

ployed a yoke 15 formed by l f strap of sheet gmember, the eye part of ber, and the connecting member that member andthe lever. v 1

All of the members specified lare stamped from sheet steel, whereby the costo-f manuf. facturing the Wrench mum.

jaw portion liofl the usual type,/ and a shank l2, the latter having a troiiglrshaped or channeled lower portion Theimember, 8 like- Wise comprises a thin fiatl jaw portion 13, and ash-ankle which is also flatand of the To connect the members 7 and S there is preferably eni- 'metal Which'is bolted or rivetedA at its endsto' the iaw part of the forni-ier the yoke serving as and to insure a powerful grippingaol is reduced to a niiniv The member Z- is composed of ath-in fiat which consti` tutes a handle-and merges gradually at its upper end into a flat part thatdirectlyjoins the above-named jaw. r

a' iiat looped `ledges of the fa, Ylongitudinel series fof notcliesupon'jtlie lower portions-'of the rear or outer;

' a guidefor the shank portion le of tii's'nrov able niember 8. An additionai-giiide', inthe nature of a 'yoke-likeI extension *fi of the ftlat part of shank 12, 'may 'also .be provided, 'A if desired, theL arrangement. of 'tliefyolre being similar to that of yoke i5.,

The reqi'iisite movements .of member aref eifect'ed through the ap'jencyv of thenlever 9 and the linlr l0 vvliich connects saidinemf ber and-lever together, as has already beenillustrated, the Ia nd its vshorter stated. In the construetion lever is of the'bellforanlr type, upper. arm 17 is' pivoted atfrom such bifurcation and, also, the shank 14.'

and thev longer arm 18 'of the leversubstantially longitudinally thereof,1the latter arm being likewise of trough-shaped .or chan- ,theffree endfv thereof to the fixed jaw-.11', vsaidarmi being" Isplit orbifurcated throughout 'itsv entire length, to permit the tivov parts ,resultantv lto straddle said jan', y Armi? is disposed4 substantially transversely of the wrench,

neled vformation and constituting the handle portion lof the lever. "'Linlr. comprises, preferably, a yoke portion '19 :and a tongue or linlr proper tionof armsl" and 'the upper portion of said tongue beingjtaperedf graduallytii permit itsextension into"th e' channelji erin 18.. in tl'iepresent construction, the' attaelif an opening in the fr ee'elnd often-gne' 205. Ait

20 thatA vprojects iip'vvardiy from -tlierear or outer end member of the; yoke and is attachedtolever-S) at the-"junc-- ment referred 'to is .effected a' screw' 21," or' vthelike, which passes through-:fan o'peiiiiigfm'.`

3Q vlever 9 at 'the pointindicated, "and through itslowerfendsaid tongue formed with a tootiil22fvvhichis lbent"fl-anti','a,ge-mst the ioive'r side members 'of-yoke i9, so'as to besupported thereby, this tooth being de: signed for interchangeableengagement with edge of shank le.

The movable member S- is adjustable rela-4; tively' to the' fixed member l@fanfic -sheld normally in position,

means 'of'a leaf spring .Qilxwhicli is carried by the former member.' and Yinsegni'rodi at'its loiverend in the channel portionrtlieizeof,

being disposedbetweenthat inmherjiand shank le, ,sof as to exert" the pressure kof;n

its free upper 'endl u 19 ofliiik l() and retain? 23 formed Y pon the-yoke, portion tooth 22 infer wege-4f?. nient vin the corresponding notch 28..) 'ifo 'release said toothl from' 'its' notch, itfziS neces- 181 justed -relatively ffdesigned to move lendi'vise relatively to the fixedmember '7 and the operating "lever,

inwardly;

'8 maybe. moved en'dwise in either-direction' .will seat itselfl ali'toi'natically 'in otcl-i'upon the removal of Sdyoke. I I f inthe operation of the device, assuming that the movable .member has rst been adpressure' from manner above desciibed'the object lto be tiirnedfor gripped is passed between the jaws 1.1 anc 1.3, and-the lever 9 obviously, causing th iobgect to b e tightlygripped between said .awa

id linkv and, in coi'isequence, saidA movable 4 'nie'iifibei 'to move forwardly, thus releasing the-object 'Y is to'ibe'fnoted that the memberl 8 lis adjustment andgdiiriiigthe 4 a'c tiia l 'operation ofthe device; also. tha-t- .member 8 isseciiiely locked in its adjusted lposition by the action of i ther-1 adjusted .by merel f drii'ngadjnstment and 'opel-ation,l the inovable member is .entirely 'out .of contact With t'he" hand of thev operatoig-,thus' PieChidng connected fixed and movable members each provi-ded with a jaw and a. shank, the shankA of the finovable member having'a series of to the i'ixed member, in the then forced thisimovement of the leveiywilll' -'p` odii`ce arearward vmovement of link 10,' [thereby drawing the movable member 8 in. `jtlieasanae direction and, .ing-with the shank ofvtl titwaid movement of the lever, z'. e., diicing a pairof handlesi the shankot the y'from'the movable member, will force I i spring- 2l `u pontooth 22 and the notch with which the latter y fis enga-ged, but maybe readilynnlocked and f shifting 'yoke 19- 'ably' engaged in said' notches; and a 'laterally toward Vthe lever; and, finally, that set my hand'in .11A wrenchcomprising, in -combii'ia-tio'n,

a link connect-ion between said leverl andthe shank of' said movable member composed ot a'yoke slidably fitted on said. shank forA lateral and longitudinal movement, and' a tongue' extending fromf saidyoke and attached-'to saidlever, said yoke being-v` proe. l'

vided Wi-th a- `tooth interchangeably en-. gaged insai-d notches; and a springassociated with said-yoke, for yieldingly holding -saidfjtooth"iiisiieh engagement.

2. A wrench compr'ising'm combination, #coiinected-xed and movable members each provided vwith a :jaw a'nd' a'shank, the'shank` Iof the"1no vable` member 'having' a series of notches `oime'd'in one edge'thereof; an open ating bell-crank lever having one arm pivoted tothe fixed member andthe other cooperatmovable member' being interposed between iat member inr` prothat of said fixed 'mein-ber andthesecoi'idnani'edarin of the. lever; a connection bc'- 'tween saidglever and theshank of said mov# ablefn'iember,for imparting' tothe latter anV v eiidwis'e" movement 'ie-l'atve to s aid 'fixed member and said lever when the lever actuated, saidv con iiection `coinlirisiiig ayoke slidably' fitted on vsaid shank for lateraland ,longitudinal ii'iovenient, and a tongue Vextending from said yoke and pivoted to said lever atthejunctionbf said arms, said yoke beingprovided with a- .tooth interchange interposedbetween sai-d lever and the'adjaf In 'testimony whereof witnesses.

I have v hereunto presence of ytwo subscribing ',Lnol s. iimrrgiinagn.:

spring.

tor normally holding said tooth in such engagement.. 

